Don't you have TV with a PiP (Picture-in-Picture) feature in the States? I've sometimes used it with a game in the main screen while the TV show is taking over the sound system in the subpicture; normally when its news or a talk show.
The options are bigger with the streaming pads, though it would start to overlap the handheld/tablets market. Specially to those people who buy their handhelds only for home use, why not get the Stream instead?